<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>02-css选择器</title>
  <style>
<!--      id -->
    #boss{
      color: brown;
      font-size: 40px;
      align-content: center;
    }
    .female{
        color: green;
    }
    .male{

    }
    div{

    }
  </style>
</head>
<body>
    <span class="female">古力娜扎</span>
    <span class="female">迪丽热巴</span>
    <span class="female hero">黑寡妇</span>

    <span class="male hero">钢铁侠</span>
    <span class="male hero">超人</span>


    <span id="boss">灭霸</span>
</body>
</html>